Template routes flakily resolve improperly if different modules have templates with the same name

[tiffz]

For example

modulePancake/template/main.html moduleGrits/template.main.html

Both exist. But then you run render_template( "main.html") from modulePancake and it gets you moduleGrits's main.html. So far, this seems to only happen if I visited moduleGrits right before visiting modulePancake. And it's flaky. Sometimes it doesn't happen.